PRACTICE

Recursion Interview Questions

10 Recursion problems asked across FAANG and top tech companies. Approach hints, optimal solutions, and related problems.

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Companies

Walmart4Amazon3Bloomberg3Meta3Microsoft3Oracle3TikTok3Google2Uber2Adobe1Apple1Atlassian1DE Shaw1Goldman Sachs1Rippling1+3 more

Topics

Array 240Hash Table 113String 112Depth-First Search 73Sorting 66Dynamic Programming 65Breadth-First Search 56Math 49Design 46Binary Search 44Greedy 43Tree 41Two Pointers 39Heap 35Stack 32Graph 28Matrix 28Sliding Window 26Binary Tree 23Backtracking 22Bit Manipulation 20Prefix Sum 20Simulation 20Union Find 19Linked List 18Queue 13Trie 12Counting 10Recursion 10Divide and Conquer 9Monotonic Stack 9Ordered Set 9Topological Sort 9Data Stream 8Database 6Enumeration 6Binary Search Tree 5Doubly-Linked List 5Geometry 5+22 more

✓ 0ProblemsDifficultyAsked atPractice

2.Add Two Numbers

Linked ListMathRecursion

Medium+3▶ Mock

Medium

+3

🔒 LeetCode▶ Mock

21.Merge Two Sorted Lists

Linked ListRecursion

Easy+2▶ Mock

Easy

+2

🔒 LeetCode▶ Mock

206.Reverse Linked List

Linked ListRecursion

Easy+4▶ Mock

Easy

+4

🔒 LeetCode▶ Mock

44.Wildcard Matching

StringDynamic ProgrammingGreedy

Hard▶ Mock

Hard

🔒 LeetCode▶ Mock

50.Pow(x, n)

MathRecursion

Medium▶ Mock

Medium

🔒 LeetCode▶ Mock

509.Fibonacci Number

MathDynamic ProgrammingRecursion

Easy▶ Mock

Easy

🔒 LeetCode▶ Mock

25.Reverse Nodes in k-Group

Linked ListRecursion

Hard▶ Mock

Hard

🔒 LeetCode▶ Mock

394.Decode String

StringStackRecursion

Medium▶ Mock

Medium

🔒 LeetCode▶ Mock

779.K-th Symbol in Grammar

MathBit ManipulationRecursion

Medium▶ Mock

Medium

🔒 LeetCode▶ Mock

1823.Find the Winner of the Circular Game

ArrayMathRecursion

Medium▶ Mock

Medium

🔒 LeetCode▶ Mock